I think the population running that bumper and a tire heavy enough to wreck a door is close to 0
If its still made like the picture then I don't see why it can't be done
Mine is not exactly like this - it seems the design has evolved to be smoother, but it may still be feasible. The biggest challenge is that it only sticks out at most 2 inches from the bodywork, so a top-mount hinge would risk interference. A surface-mount hinge on the face of the bumper would work better for the GD bumper.